Charles Darwin introduced the notion of “survival of the fittest,” where the fittest animals are those who can survive long enough to produce healthy offspring. The fittest animal can also be the most stealthy, resourceful, or even the...

“Being on a voyage forces you to unplug,” says TED Fellow and third-generation captain Lehua Kamalu. Sharing ancient knowledge from traditional Hawaiian ocean voyaging, she reflects on the transformational power of seafaring journeys —...

Intuition helps us see the big picture, says filmmaker and sustainability leader Hrund Gunnsteinsdóttir. Reflecting on her work at the UN, she outlines three ways innsæi (the Icelandic word for "intuition") can help humanity face our...

It's time for our periodic update of good news from Angus Hervey, founder of Fix the News, an independent publication that reports stories of global progress. In a quick talk, he shares three major updates of recent human progress on...

An oblate spheroid is a special case of an ellipsoid where two of the semi-principal axes are the same size.

Denizens of the Deep

Where rivers meet the ocean, coastlines tend to bend either inward or outward, creating estuaries and deltas. But how do they get those shapes? Want to learn more about the topic in this week's video? Here are some keywords/phrases to...

If you think it's cold outside where you are, you should try living in the coldest place on Earth: Antarctica! Learn why it's a desert even though it's very cold, and about awesome animals like seals and penguins.

Squeaks and Jessi are learning all about the animals that live at the bottom of the world, including penguins - emperor penguins, macaroni penguins, and more! We learn why penguins look like they're all dressed up, and what kind of food...

The oceans around Antarctica are cold, but full of life. Join Jessi and Squeaks to learn about the blubber of seals, the amazing antifreeze blood of fish, and the shrinking skills of krill.

Antarctica is the coldest place on Earth, but there's still a lot to explore, on land and under the waves!

In this SciShow Kids episode, Jessi and Squeaks learn about amazing places where it almost never rains.

Can AI help catch oceanic outlaws? From drug smugglers to modern-day pirates, maritime crime fighter Dyhia Belhabib introduces Heva: an AI-powered tool that aggregates international criminal records to detect and stop crime that might...

Many people picture the Arctic as a pristine icy wilderness. But when it comes to microplastics, it's one of the most polluted places on Eart

Horizontal gene transfer might not be the flashiest of names, but animals are using it to create genetic hybrids without a human in sight. Like frogs rocking the DNA snippets of snakes, and fish sharing antifreeze superpowers.

For years, scientists couldn't solve the mystery of strange pits on the floor of the North Sea. Initially they blamed methane seeps, but it seems like the pits were actually made on porpoise.

Ocean waters are constantly on the move, traveling far distances in complex currents that regulate Earth's climate and weather patterns. How might climate change impact this critical system? Oceanographer Susan Lozier dives into the...

When we think of the ocean and what's in it, you probably think of stuff like fish, or salt, or seaweed. But there's a crystal that is so vital to marine life that they take dissolved materials in that salty water and build it...

Our oceans don’t technically contain salt, but the ions salt is made of play a critical role in planet-wide processes that make the Earth habitable.

When it comes to piecing together what happened to civilizations that no longer exist, it can be challenging to solve the mystery. But research into Angkor, the Akkadian Empire, and even the Norse of Greenland, is helping us see that...

The vast, white surface of Antarctica stretches for over 3 million square kilometers. On the coast of this expanse, just a few meters beneath the ice, lies a remarkably diverse realm that is home to over 8,000 species of sea denizens who...

Soon after whaling ships began operating in the North Pacific, an interesting trend emerged. Within just a few years, whalers saw a 58% drop in their successful strikes. Sperm whales had suddenly become harder to kill— they had begun...

Mister Brown is moving away to Wisconsin, so Jessi, Squeaks and all of his Fort friends are here to say goodbye. But before he goes, Mister Brown want to teach everyone about the place he's moving to and all the amazing glacial lakes...

Tuna are big, fast-swimming ocean fish. They're hardly the natural prey of cats, whose ancestors evolved in the desert. Yet a study of taste receptors in cats shows that they're predisposed to LOVE tuna.